This is an IQ test based on Raven's Progressive Matrices. Basically, it is 60 puzzles, with multiple choice answers to fill the blank in each puzzle, and is a good measure of general intelligence, basically, not what you know, but how well you can learn! You have 40 minutes to complete it, but I am sure there are those who can do it in 25 minutes or less.
They do say that it is good to exercise your brain!
Have a go, it is free. There are tests like this where you get to the end and charge you for your scores!
Ensure on the page on the right select your country and age, email if you want (not needed) and scroll down to where it says 'Begin Test Now'
I have done this test sober, now I need to do it drunk and compare the scores:snicker: